I vacuum pack all stored ammo. It water proofs it. Protects if from moister, dirt and most of the time from being scattered all over the trunk. If it is vacuum packed you can keep it in anything like a pack, range bag or what ever you want. To this date I have not had a round that wouldn't go bang do to the way it was stored.
Before I had the vacuum packer I would take nail polish and seal each round at the primer and around the neck of the bullet. I took one such round after the nail polish dried and put it in a glass of water for a week. Took it out of the glass and went on to the back porch and fired it. It went bang and I hit the box I was aiming at.
I have always tried to do something to keep ammo dry. I have been on to many trips that it has rained or the trunk has leaked and someone thought it would be funny to tip over the canoe. So most of my stuff gets vacuum packed that I put in my get home bag or my hiking pack.
Hmmm... Seems like I need to get to know my vacuum sealer better...
How do you protect the packaging from getting punctured by pointy rifle rounds?
I just purchased some nail polish to use in lieu of loctite - that was an interesting experience. Not every day you see a big ugly guy like me in the nail polish aisle.
Thanks 6mm!